HELP...Will not idle in gear

While it's not always the case, retarding the timing may in fact not make it worse,
since the mix was set for the other adv.. Over-adv. will make an eng. behave exactly
as if it were running lean, including surge at part throttle etc., that aside, AJ pretty
much summed it up for you.
If you don't know how to verify the timing marks,you need to learn, here's how I
do it with the head on.Get an old spark plug, snap off the ground electrode,then
bust off and out the ceramic and pos. electrode.Once you've hollowed out the plug
body, get yourself a 5/16 all-thread piece about 3.5" long and two nuts, one plain
and one flanged. Put the flanged one on the "top" side,and the plain one chamber
side,run the all-thread thru' almost all out the chamber side. The trickiest part is to
grind the chamber side nut 'till it passes thru' the plug threads,it will be round when
you're done. If you can find a short threaded sleeve that already fits you can skip
that step.
Once you have assembled your positive stop, round the end of the all thread off
w/a file or your grinder so you don't nick or gouge your piston. Then set the
timing marks well before TDC. Install your stop,and with all the plugs out,slowly
bring the crank around by hand 'till it hits the stop.Mark your damper,then roll the
engine back round backwards 'till you hit it again, then make the second mark.
Exactly halfway between those marks is true TDC,at least on that cyl.(#1).
If you have trouble turning the eng., there are posts a few pages back addressin
that. If you're running stock valves or lift under .500", don't worry about valves
hitting you're stop, you'll be fine. GO EASY..